Triangle JKM with side J across from angle J, side K across from angle K, and side M across from angle M. If J is 21 inches, K is 12 inches, and ∠M measures 62°, then find M using the Law of Cosines. Round your answer to the nearest tenth.
a) 88.3 in
b) 34.8 in
c) 29.7 in
d) 18.7 in